First of all I want to thank you Pieter for trying to help me. I think I'm going crazy...
I changed in my first post the results from Combofix that I ran again. I don't know if something changed...
From the first post till now I succeded to make taskmanager and the Run window to be active... they weren't first time. I deleted the svhost.exe, but I cannot delete svchost.exe from C:/windows/system32. I tried many things in normal mode, in safe mode, with Advanced File Remover and with everything that was wrote about this subject.
I have a problem with the coolpics.reg. I made it (does it matter where I save it?) and when I double click it it asks me with what I want to open it. Nothing about confirming if I want to merge it with the registry.
And other problem is when I wanted to scan with Kaspersky online it had to do an update and couldn't do it. My antivirus is Nod32, before I had Kaspersky and I had to remove it cause it couldn't do the updates (and the signatures were obsolete or something like that...)
I am not very good with computers but I am a quick learner...
And more... when I run taskmanager I see at processes the svchost.exe and when I want to terminate it my computer reboots...
I hope Pieter you understood something from what I tried to explain
And thank you again!

You will have to grasp this for us to be successfull.
The svchost.exe in C:\windows\system32 is the real one.
It is an essential windows file, which is why Windows crashes when you try and stop it.
The one that is trying to pretend to be the real one was in the folder:
C:\WINDOWS\system
Note that there were also differences in the filename.

You have to be very carefull before you jump to the (wrong) conclusion.
I would appreciate it if you did not go back and change old posts.
That is very confusing.

Doubleclick the reg again.
If it asks with which program you want to open it choose
registry-editor if it is displayed in the list of options.

If it isn't listed use the Browse button and point the way to: C:\WINDOWS\regedit.exe

Thanks. One of my co-worker got it via yahoo messenger. She was not running any AV. I was able to clean it by Antivir. Later i checked it was also detected by Ewido and SuperAntispyware.
It disbaled Task manager and regedit that I did not know how to enable( I just used process explorer at that time). Later I found the tool to enable these items. Infiltration Recovery Tool.

The svchost.exe in C:\windows\system32 is the real one.
It is an essential windows file, which is why Windows crashes when you try and stop it.
The one that is trying to pretend to be the real one was in the folder:
C:\WINDOWS\system
Note that there were also differences in the filename.

Click to expand...

Sorry... I didn't know... now I now

Pieter_Arntz said:

Doubleclick the reg again.
If it asks with which program you want to open it choose
registry-editor if it is displayed in the list of options.

If it isn't listed use the Browse button and point the way to: C:\WINDOWS\regedit.exe

Click to expand...

My computer couldn't find the regedit.exe sau I searched it and it was only in the C:\WINDOWS\ServicePackFiles and I made copy/paste in the C:\WINDOWS too for Run to find it... and I resolved one problem...
Then I saw the post from mohitygupta who had the same problem and I did the ieblock.reg and now everything is ok I'm so happy. I don't have any svhost.exe anywhere and my antivirus couldn't find anything and my homepage is not blocked anymore and... I am happy... I knew that I can do this and to not format C:
Thank u very very very much... u're the best... and I know from now on when I have a problem with viruses on what site to go...
Take care everybody